Word Study
indemonstrable
CIDE DICTIONARY
Incapable of being demonstrated. [1913 Webster]
OXFORD DICTIONARY
indemonstrable, adj. that cannot be proved (esp. of primary or axiomatic truths).
THESAURUS
indemonstrable
agnostic, ambiguous, capricious, chancy, changeable, dicey, doubting, equivocal, erratic, fickle, hesitant, hesitating, incalculable, indecisive, irresolute, polysemous, skeptical, touch-and-go, unaccountable, uncertain, unconfirmable, unconvinced, undivinable, unforeseeable, unpersuaded, unpredictable, unprovable, unsure, unverifiable, variable, wavering, whimsicalFor further exploring for "indemonstrable" in Webster Dictionary Online